High-temperature motor pump and method for operating thereof

Details High-temperature motor pump and method for operating thereof High-temperature motor pump and method for operating thereof

1997-03-18

1999-03-16

Freay, Charles G.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

417228, 4174238, F04B 3906

Patent

active

058821821

ABSTRACT:
A high-temperature motor pump is operated by a method wherein coolant is supplied in a manner to maintain the temperature thereof sufficiently high to keep its viscosity at a low level for smoothly flowing in a narrow gap between a rotor and a stator. Thus, the coolant performs a cooling function without frictional loss, and thereby the motor pump is stably operated with little energy loss.

REFERENCES:
patent: 4545333 (1985-10-01), Nagumo et al.
patent: 4614482 (1986-09-01), Gaffal
patent: 4645429 (1987-02-01), Asami et al.
patent: 4808087 (1989-02-01), Tsutsui et al.
patent: 5129795 (1992-07-01), Hyland
patent: 5221191 (1993-06-01), Leyderman et al.
Patent Abstracts of Japan, vol. 013, No. 450 (E-830), 11 Oct. 1989.

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